* include/cygwin/stdlib.h: New file.
* environ.cc (unsetenv): Change to return -1 on input error.
* include/cygwin/version.h: Add more description to latest api bump.
* dir.cc (readdir_workdir): Only fill out d_ino when linked into older app.
* include/cygwin/version.h: Bump api minor number to 147, reflecting
obsolescence of d_ino.
(CYGWIN_VERSION_USER_API_VERSION_COMBINED): New convenience macro.
(CYGWIN_VERSION_CHECK_FOR_NEEDS_D_INO): New convenience macro.
* strace.cc (show_usecs): Renamed from 'usecs'.
(main): Use show_usecs rather than usecs. Toggle delta if '-u' is specified.
(handle_output_debug_string): Avoid printing microsecond timestamp if
show_usecs == 0.
* utils.sgml (strace): Add words to describe '-u'.
Paolo Bonzini [Mon, 5 Dec 2005 15:16:05 +0000 (15:16 +0000)]
toplevel:
2005-12-05 Paolo Bonzini <bonzini@gnu.org>
Sync with gcc:
2005-12-05 Paolo Bonzini <bonzini@gnu.org>
* configure.in (CONFIGURED_BISON, CONFIGURED_YACC, CONFIGURED_M4,
CONFIGURED_FLEX, CONFIGURED_LEX, CONFIGURED_MAKEINFO): Remove
"CONFIGURED_" from the AC_CHECK_PROGS invocation. Move below.
Find in-tree tools if available.
(EXPECT, RUNTEST, LIPO, STRIP): Find them and substitute them.
(CONFIGURED_*_FOR_TARGET): Don't set nor substitute.
(*_FOR_TARGET): Set them with GCC_TARGET_TOOL.
(COMPILER_*_FOR_TARGET): New.
* Makefile.tpl (HOST_EXPORTS): Add *_FOR_TARGET symbols that gcc needs.
(BASE_TARGET_EXPORTS): Use COMPILER_*_FOR_TARGET symbols.
(CONFIGURED_*, USUAL_*): Remove.
(BISON, YACC, FLEX, LEX, M4, MAKEINFO, EXPECT, RUNTEST, LIPO,
STRIP): Use autoconf substitutions.
(COMPILER_AS_FOR_TARGET, COMPILER_LD_FOR_TARGET,
COMPILER_NM_FOR_TARGET): New.
(EXTRA_HOST_FLAGS): Pass LIPO and STRIP.
(all): Make all-host and all-target in parallel.
(do-[+make_target+], do-check, install, [+compare-target+]): Ensure
that $$r and $$s are set before invoking a recursive make.
(stage[+id+]-bubble): Likewise, and invoke the comparison at the end.
([+bootstrap-target+]): Inline most of the `all' target.
2005-11-29 Ben Elliston <bje@au.ibm.com>
* Makefile.tpl (clean-target-libgcc): Invoke clean-target-libgcc
from the gcc build directory.
* Makefile.in: Regenerate.
2005-11-29 Ben Elliston <bje@au.ibm.com>
* Makefile.def: Add new libdecnumber host_module. Make all-gcc
depend on all-libdecnumber.
* configure.in (host_libs): Include libdecnumber.
* Makefile.in: Regenerate.
* configure: Likewise.
2005-11-21 Kean Johnston <jkj@sco.com>
* config.sub, config.guess: Sync from upstream sources.
config:
2005-12-05 Paolo Bonzini <bonzini@gnu.org>
* include/exceptions.h (exception_list): Revert previous change. Windows
doesn't care.
(exception_handler): Use real exception_list parameter type rather than void *
* tlsoffsets.h: Regenerate.
* cygtls.h (_cygtls::handle_exceptions): Use real exception_list parameter type
rather than void *.
(handle_threadlist_exception): Ditto.
(init_exception_handler): Ditto.
* cygtls.cc (_cygtls::handle_threadlist_exception ): Ditto.
(_cygtls::init_exception_handler): Add kludge to terminate linked list with a
loop, which seems to solve problem of RtlUnwind causing problems
* exceptions.cc (rtl_unwind): Use real exception_list parameter type rather
than void *.
(_cygtls::handle_exceptions): Ditto.
* cygtls.h (_cygtls::el): New field.
(_cygtls::handle_exceptions): New function declaration.
(_cygtls::handle_threadlist_exception): Ditto.
(_cygtls::init_exception_handler): Ditto.
(_cygtls::init_threadlist_exceptions): Remove arg from declaration.
* cygtls.cc (_cygtls::call2): Don't initialize exceptions here.
(_cygtls::init_thread): Do it here instead and use member function.
(_cygtls::handle_threadlist_exception): Move into _cygtls class.
(_cygtls::init_exception_handler): Ditto. Rely on existence of 'el' memmber in
_cygtls.
(_cygtls::init_threadlist_exceptions): Ditto.
* dcrt0.cc (dll_crt0_1): Remove exception_list definition and setting since it
now commonly resides in the tls.
* exceptions.cc (init_exception_handler): Move to cygtls.cc.
(init_exceptions): Ditto.
(rtl_unwind): New, safe wrapper function for RtlUnwind.
(_cygtls::handle_exceptions): Move to _cygtls. Call rtl_unwind to unwind
frames and eliminate copying of structures. Put address of failing instruction
in si_addr, not the address on the stack. Return 0 to indicate that we've
handled this exception.
* external.cc (cygwin_internal): Make CW_INIT_EXCEPTIONS a no-op.
* sigproc.cc (wait_sig): Accommodate argument change to
_cygtls::init_threadlist_exceptions.
* tlsoffsets.h: Regenerate.
* include/exceptions.h (exception_list): Add more stuff to the exception list.
Apparently windows needs this?
(init_exceptions): Remove bogus declaration.
* include/cygwin/signal.h (SI_USER): Redefine as zero as per SUSv3.
* thread.cc (pthread_kill): Set si_pid and si_uid.
* timer.cc (timer_thread): Set si_code to SI_TIMER.
* mmap.cc: Make debug output more consistently. Fix some comments.
(gen_protect): Convert to inline function.
(gen_access): Ditto.
(mmap_record::gen_protect): Add create parameter as in global function.
(mmap_record::alloc_page_map): Change condition so that always the
correct protection setting is set after mapping has been established.
(mmap64): For anonymous mappings set offset always to 0.
(fixup_mmaps_after_fork): Always call fixup_mmap_after_fork method
with the MAP_FIXED flag set.
* devices.h (_minor): Coerce argument to proper type before manipulating.
(_major): Ditto.
(device::is_fs_special): New function.
* fhandler_disk_file.cc (fhandler_base::fstat_helper): Set the size to 0 for
devices rather than reporting the size of the symlink.
(fhandler_disk_file::readdir): Use is_fs_special to determine if .lnk should be
stripped.
* path.cc: Rename symlink_info::is_symlink to symlink_info::issymlink
throughout.
(symlink_info::isdevice): New field.
(path_conv::check): Use 'isdevice' to determine if just-parsed entity is a
device rather than relying on non-zero major/minor.
(symlink_info::parse_device): Set isdevice to true if we've discovered a
device.
(symlink_info::check): Clear isdevice field prior to processing. Use isdevice
to control debugging output.
(symlink_info::set): Set isdevice to false.
* path.h (path_conv::is_fs_special): New function.
* devices.cc: Regenerate.
Jeff Johnston [Wed, 30 Nov 2005 23:43:57 +0000 (23:43 +0000)]
2005-11-30 Shaun Jackman <sjackman@gmail.com>
* libnosys/Makefile.in (OBJS): Add chown, readlink, and symlink.
* libnosys/chown.c: New file.
* libnosys/readlink.c: New file.
* libnosys/symlink.c: New file.
Corinna Vinschen [Wed, 30 Nov 2005 15:05:48 +0000 (15:05 +0000)]
* mmap.cc (list::try_map): New method, implementing trying to map
within another already existing map, moved from mmap64 here.
(mmap64): Just call try_map now.
(fhandler_dev_zero::fixup_mmap_after_fork): Always create new private
map with PAGE_READWRITE protection.
(fixup_mmaps_after_fork): Fix comment.
Corinna Vinschen [Tue, 29 Nov 2005 16:28:05 +0000 (16:28 +0000)]
* fhandler.h (fhandler_dev_zero::mmap): Add method.
(fhandler_dev_zero::munmap): Ditto.
(fhandler_dev_zero::msync): Ditto.
(fhandler_dev_zero::fixup_mmap_after_fork): Ditto.
* mmap.cc: Implement anonymous mapping using fhandler_dev_zero class.
Implement private anonymous maps using VirtualAlloc/VirtualFree. Fix
or add some more comments.
(fh_paging_file): Change to type fhandler_dev_zero.
(priv): New static inline function to avoid having lots of flag bit
tests in the code. Use throughout were appropriate.
(fixed): Ditto.
(anonymous): Ditto.
(noreserve): Ditto.
(autogrow): Ditto.
(gen_protect): Never generate PAGE_WRITECOPY protection for
private anonymous maps.
(gen_access): Drop FILE_MAP_EXECUTE handling since it's not supported
correctly on 9x.
(VirtualProt9x): Move comment from mmap64 here.
(mmap_record::mmap_record): Gegerate correct device entry for
anonymous maps, though unused right now.
(mmap_record::priv): Call global priv function.
(mmap_record::fixed): Call global fixed function.
(mmap_record::anonymous): Call global anonymous function.
(mmap_record::noreserve): Call global noreserve function.
(mmap_record::autogrow): Call global autogrow function.
(list::anonymous): New method. Use throughout were appropriate.
(mmap_record::compatible_flags): Drop now useless ifdef.
(mmap_record::alloc_page_map): Accomodate private anonymous maps.
(mmap_record::map_pages): Accomodate MAP_NORESERVE mappings.
(mmap_record::unmap_pages): Accomodate private anonymous maps.
(mmap64): Simplify argument check. Don't remove the MAP_PRIVATE flag
for anonymous mappings on 9x anymore since that's now handled
gracefully.
(mprotect): Accomodate MAP_NORESERVE mappings. Fix case when
non-mmap areas are just MEM_RESERVEd.
(fhandler_dev_zero::mmap): Implement anonymous mapping here.
(fhandler_dev_zero::munmap): Ditto.
(fhandler_dev_zero::msyn): Ditto.
(fhandler_dev_zero::fixup_mmap_after_fork): Ditto.
(fixup_mmaps_after_fork): Accomodate private anonymous maps. Enhance
debug output in case VirtualProtect fails.
* include/sys/mman.h: Really define MAP_NORESERVE now.
Corinna Vinschen [Mon, 28 Nov 2005 22:32:29 +0000 (22:32 +0000)]
* autoload.cc (NtCreateSection): Define.
* cygheap.cc (_csbrk): Call getpagesize instead of getshmlba.
* dcrt0.cc (dll_crt0_0): Call mmap_init.
* external.cc (cygwin_internal): Call getpagesize instead of getshmlba.
* fhandler.h (fhandler_base::mmap): Change access to prot parameter.
(fhandler_base::fixup_mmap_after_fork): Ditto.
(fhandler_disk_file::mmap): Ditto.
(fhandler_disk_file::fixup_mmap_after_fork): Ditto.
(fhandler_dev_mem::mmap): Ditto.
(fhandler_dev_mem::fixup_mmap_after_fork): Ditto.
* fhandler_mem.cc (fhandler_dev_mem::write): Call getsystempagesize
instead of getpagesize.
(fhandler_dev_mem::read): Ditto.
(fhandler_dev_mem::fstat): Ditto.
(fhandler_dev_mem::mmap): Move to mmap.cc.
(fhandler_dev_mem::munmap): Ditto.
(fhandler_dev_mem::msync): Ditto.
(fhandler_dev_mem::fixup_mmap_after_fork): Ditto.
* fhandler_proc.cc (format_proc_meminfo): Call getsystempagesize
instead of getpagesize.
* fhandler_process.cc (format_process_stat): Ditto.
(format_process_status): Ditto.
(get_mem_values): Ditto.
* mmap.cc: Fix formatting. Try to make more readable and modular.
Take advantage of pagesize==granularity.
(gen_protect): New static function to evaluate Windows
protection bits from POSIX protection and flags.
(gen_access): Ditto for Windows access mode.
(VirtualProt9x): Wrapper function to call VirtualProtect on 9x.
(VirtualProtNT): Ditto for NT.
(VirtualProtEx9x): Ditto for VirtualProtectEx on 9x.
(VirtualProtExNT): Ditto for NT.
(CreateMapping9x): Wrapper function for creating a mapping handle on 9x.
(CreateMappingNT): Ditto for NT.
(MapView9x): Wrapper function to map a view on 9x.
(MapViewNT): Ditto for NT.
(mmap_funcs_9x): Structure containing function pointers to wrapper
functions for 9x.
(mmap_funcs_nt): Ditto for NT.
(mmap_func): Pointer to wrapper functions used in subsequent code.
(mmap_init): Initialize mmap_func depending on OS.
(class mmap_record): Use sensible member names. Add POSIX protection
member. Drop Windows access flags member. Constify more methods.
Use accessors instead of direct member access inside of own methods.
(mmap_record::gen_protect): Class wrapper to evaluate matching
Windows protection bits.
(mmap_record::gen_access): Ditto for Windows access flags.
(mmap_record::compatible_flags): New function to check if flags are
compatible with flags of existing map.
(list::add_record): Drop offset and length arguments.
(class map): Change counters to unsigned. Match usage throughout.
(mmapped_areas): Convert from pointer to global struct.
(mmap_record::alloc_page_map): Simplify.
(mmap_record::map_pages): Ditto.
(mmap_record::fixup_page_map): Delete.
(mmap64): Simplify. Add workaround for Windows 98 bug. Fix bug on
NT that existing anonymous mappings weren't searched for a match.
(munmap): Add workaround for Windows 98 bug.
(msync): Simplify.
(mprotect): Handle existing maps correctly.
(mlock): Add local pagesize variable and enlightening comment.
(fhandler_disk_file::mmap): Main functionality now in CreateMapping/
MapView wrapper functions.
(fhandler_disk_file::fixup_mmap_after_fork): Call MapView wrapper.
(fhandler_dev_mem::mmap): Moved from fhandler_mem.cc. Simplify by
calling MapViewNT.
(fhandler_dev_mem::munmap): Moved from fhandler_mem.cc.
(fhandler_dev_mem::msync): Ditto.
(fhandler_dev_mem::fixup_mmap_after_fork): Ditto. Call MapViewNT.
(fixup_mmaps_after_fork): Restructure and hopefully speed up loop for
setting protection and memory content on MAP_PRIVATE maps.
* ntdll.h (AT_ROUND_TO_PAGE): Remove define.
(AT_EXTENDABLE_FILE): Add define.
(NtCreateSection): Add prototype.
* syscalls.cc (getpagesize): Return granularity as pagesize now.
(getsystempagesize): New function to retrieve "real" pagesize.
(getshmlba): Delete since it's replaced by getpagesize now.
* wincap.h (wincaps::has_mmap_alignment_bug): New element.
* wincap.cc: Implement above element throughout.
* winsup.h (getshmlba): Drop prototype.
(getsystempagesize): Add prototype.
(mmap_init): Ditto.
* include/sys/mman.h: (Not yet) define MAP_NORESERVE.
Corinna Vinschen [Mon, 28 Nov 2005 10:06:33 +0000 (10:06 +0000)]
* fhandler_disk_file.cc (fhandler_base::fstat_helper): Don't rely on
has_acl() state for evaluating inodes. Temporarily(?) enable "real"
inodes for remote drives.
* fhandler_tty.cc (fhandler_tty_slave::open): Reset the current windows station
whenever ctty == -1 regardles of whetehr there's a windows station already
assigned. Close the old windows station in this situation.
* pinfo.cc (_pinfo::set_ctty): Reinstate incrementing of console count when
recording ctty so that the current tty is always around.
* Makefile.in: Link cygcheck with libwininet.a.
* cygcheck.cc: Add includes.
(grep_packages): New global variable.
(display_internet_error): New function.
(safe_chars): New global variable.
(base_url): Ditto.
(package_grep): New function.
(usage): Reword --help output for clarity. Document new argument.
(longopts): Add 'package-query' option.
(opts): Add 'p' option, reorder to be consistent with 'longopts'.
(main): Accommodate new option.
* utils.sgml (cygcheck): Update --help output. Document new -p option.
Jeff Johnston [Thu, 17 Nov 2005 21:51:21 +0000 (21:51 +0000)]
2005-11-17 Jeff Johnston <jjohnstn@redhat.com>
* libc/sys/linux/dl/dl-local.h: New file based on old dlfcn.h
in libc/sys/linux/include.
* libc/sys/linux/dl/dlfcn.h: Moved to libc/sys/linux/include.
* libc/sys/linux/dl/ldsodefs.h: Include dl-local.h instead of dlfcn.h.
* libc/sys/linux/include/dlfcn.h: Replaced with dlfcn.h formerly
in libc/sys/linux/dl.
* fhandler.h (fhandler_console::fixup_after_fork_exec): Declare new function.
(fhandler_console::fixup_after_fork): Use fixup_after_fork_exec.
(fhandler_console::fixup_after_exec): Ditto.
* fhandler_console.cc (fhandler_console::fixup_after_fork): Delete definition.
(fhandler_console::fixup_after_fork_exec): Rename from fixup_after_exec.
* pinfo.cc (_pinfo::set_ctty): Don't play with console count here.
* syscalls.cc (close_all_files): Don't close cygheap ctty if hExeced since the
child will be copying information from us.
(setsid): Use myctty() rather than raw ctty #.
* cygheap.h (init_cygheap::manage_console_count): Declare new function.
(init_cygheap::console_count): Renamed from open_fhs. Make private.
* cygheap.cc (init_cygheap::manage_console_count): Define new function.
* dtable.cc (dtable::fixup_after_exec): Always call fixup_after_exec on
elements of fd even when they are about to be closed.
* fhandler.h (report_tty_counts): Remove open_fhs from debugging output.
* fhandler_console.cc (fhandler_console::open): Use manage_console_count rather
than manipulating count directly.
(fhandler_console::close): Ditto.
(fhandler_console::fixup_after_fork): Ditto.
(fhandler_console::fixup_after_exec): Ditto. Don't close handles if
close_on_exec.
* fhandler_tty.cc (fhandler_tty_slave::open): Use manage_console_count() rather
than manipulating count directly. Reflect change in arguments to
report_tty_counts().
(fhandler_tty_slave::close): Ditto for both.
(fhandler_tty_slave::dup): Ditto for both.
(fhandler_tty_slave::ioctl): Use myctty() rather than raw ctty #.
(fhandler_tty_slave::fixup_after_fork): Reflect change in arguments to
report_tty_counts().
(fhandler_tty_master::init_console): Use manage_console_count() rather than
manipulating count directly.
* fhandler_clipboard.cc (fhandler_dev_clipboard::fixup_after_exec): Don't
perform any operations if close_on_exec.
* fhandler_dsp.cc (fhandler_dev_dsp::fixup_after_exec): Ditto.
* fhandler_raw.cc (fhandler_dev_raw::fixup_after_exec): Ditto.
* fhandler_serial.cc (fhandler_serial::fixup_after_exec): Ditto.
* pinfo.h (_pinfo::_ctty): Declare new function.
(myctty): Declare new macro.
(__ctty): Declare new macro.
* pinfo.cc (_pinfo::_ctty): Define new function.
(_pinfo::set_ctty): Use manage_console_count() rather than manipulating count
directly.
* signal.cc (kill_pgrp): Use myctty() and __ctty() macros rather than raw ctty
#.
* syscalls.cc (setsid): Ditto. Use manage_console_count() rather than
manipulating count directly.
Thiemo Seufer [Mon, 14 Nov 2005 02:25:39 +0000 (02:25 +0000)]
* mips.h: Assign 'm'/'M' codes to MIPS16e save/restore
instructions. Define MIPS16_ALL_ARGS and MIPS16_ALL_STATICS for
save/restore encoding of the args field.
* mips16-opc.c: Add MIPS16e save/restore opcodes.
* mips-dis.c (print_mips16_insn_arg): Handle printing of 'm'/'M'
codes for save/restore.
* config/tc-mips.c (mips16_ip): Add handling of 'm' and 'M' codes
for the MIPS16e save/restore instructions.
* gas/mips/mips.exp: Run new save/restore tests.
* gas/testsuite/gas/mips/mips16e-save.s: New test for generating
different styles of save/restore instructions.
* gas/testsuite/gas/mips/mips16e-save.d: New.
Corinna Vinschen [Sun, 13 Nov 2005 16:24:40 +0000 (16:24 +0000)]
* fhandler_socket.cc (fhandler_socket::recvfrom): Just return 0 (EOF)
in case of WSAESHUTDOWN.
(fhandler_socket::recvmsg): Ditto.
* poll.cc (poll): Set revents to POLLIN instead of POLLHUP. Add comment.
Nick Clifton [Fri, 11 Nov 2005 11:06:31 +0000 (11:06 +0000)]
PR 1150
* readelf.c (get_mips_symbol_other): New function.
(get_symbol_other): New function.
(process_symbol_table): Call get_symbol_other() to get a description of the
st_other field if it contains more information than just the visibility.
* elfxx-mips.c (mips_elf_calculate_relocation): Ignore an undefined symbol if
it is optional.
(_bfd_mips_elf_merge_symbol_attribute): Make sure that the optional flag is
merged as well as the visibility.
* elfxx-mips.h (_bfd_mips_elf_merge_symbol_attribute): Prototype.
(elf_backend_merge_symbol_attribute): Define.
* mips.h (STO_OPTIONAL): Define.
(ELF_MIPS_IS_OPTIONAL): Define.
* times.cc (hires_ms::prime): Comment out call to timeBeginPeriod for now.
(hires_ms::usecs): Call prime if haven't called began_period().
* param.h: Don't define stuff that is already defined in endian.h.
Corinna Vinschen [Thu, 10 Nov 2005 15:04:06 +0000 (15:04 +0000)]
* bsd_helper.cc (securityinit): New function. Move initialization
of security related variables from ipcinit here.
* bsd_helper.h (securityinit): Add prototype.
* cygserver.cc (main): Call securityinit right after wincap.init.
* process.cc (process_cache::process): Fix maximum process condition.
* README: Add description for new -p/--process-cache option.
* bsd_helper.cc (default_tun_check): Add kern.srv.process_cache_size
entry to tunable_params. Set max value of kern.srv.request_threads
to 310.
* cygserver.cc (SERVER_VERSION): Set to 1.20.
(print_usage): Print usage of new parameter -p.
(main): Add process cache parameter handling. Accomodate new max
value of request threads.
* cygserver.conf: Add kern.srv.process_cache_size tunable parameter.
Accomodate new max value of kern.srv.request_threads.
* process.cc: Fix a comment.
(process_cache::process_cache): Add max process cache size parameter.
Change _cache_add_trigger to manual reset event.
(struct pcache_wait_t): New struct used as parameter to
pcache_wait_thread.
(pcache_wait_thread): New thread function used for threaded process
cache.
(process_cache::wait_for_processes): Use threaded waiting if number
of processes to wait for is bigger than 62. Always check all processes
to avoid race under heavy load.
(process_cache::sync_wait_array): Remove useless assert. Reset
_cache_add_trigger right at the start since it's manual reset now.
Accomodate threaded waiting.
* process.h (process_cache::process_cache): Add max_procs parameter.
(process_cache::_max_process_count): New member.
(process_cache::_wait_array: Raise to allow up to 5 wait threads.
(process_cache::_process_array): Ditto.
Jeff Johnston [Tue, 8 Nov 2005 22:44:16 +0000 (22:44 +0000)]
2005-11-08 Tom Walsh <tom@openhardware.net>
* libc/time/tzvars.c: New file.
* libc/time/tzset_r.c: Moved globals into tzvars.c
so other time functions needn't link in __tzset_r and its
dependencies.
* libc/time/Makefile.am: Add the new file.
* libc/time/Makefile.in: Regenerated.
* cygheap.h (init_cygheap::_gtod): New hires_ms element.
* hires.h (hires_ms::minperiod): Remove static designation.
(hires::began_period): New field.
* signal.cc: Include headers required for cygheap.h now that gtod lives in the
cygheap.
* timer.c: Ditto.
* times.cc (gtod): Delete variable.
(gtod::minperiod): Ditto.
(gtod::began_period): Define.
(hires_ms::prime): Add more debugging output. Call timeBeginPeriod only when
!began_period.
Jeff Johnston [Thu, 3 Nov 2005 16:52:15 +0000 (16:52 +0000)]
2005-11-03 Shaun Jackman <sjackman@gmail.com>
* libc/include/sys/unistd.h (readlink, symlink): Provide these
prototypes by default.
* libc/sys/linux/include/unistd.h (readlink): Remove this
prototype.
* libc/sys/linux/sys/unistd.h (readlink, symlink): New
prototypes.
* include/sys/cygwin.h: Define CYGWIN_SIGNAL_STRING.
* exceptins.cc (sigpacket::process): Send a _CYGWIN_SIGNAL_STRING to gdb if the
process is being debugged. A WIP.
* exceptions.cc (signal_exit): Eliminate setting of main thread priority since
process lock should make that unnecessary.
* fork.cc (stack_base): Eliminate.
(frok::parent): Subsume stack_base and just set stack stuff here. Report on
priority class in debugging output.
* spawn.cc (spawn_guts): Report on priority class in debugging output.
* fork.cc (frok::child): Change order of cleanup prior to return.
(fork): Save more of the stack.
* gendef: Fix some comments.
* sigproc.cc (wait_sig): Clarify debug output.